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1 /*
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2 * BayesianArrayStructure.h
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3 * midiCannamReader
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4 *
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5 * Created by Andrew on 17/07/2011.
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6 * Copyright 2011 QMUL. All rights reserved.
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7 *
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8 */
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9 #ifndef BAYESIAN_ARRAY_STRUCTURE
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10 #define BAYESIAN_ARRAY_STRUCTURE
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11
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12
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13 #include "ofMain.h"
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14 //#include "DynamicBayesianArray.h"
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15 #include "DynamicVector.h"
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16
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17 class BayesianArrayStructure {
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18
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19 public:
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20 // BayesianArrayStructure();
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21 BayesianArrayStructure();
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22 BayesianArrayStructure(int length);
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23
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24 void calculatePosterior();
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25 void drawArrays();
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26 void drawArraysRelativeToTimeframe(const double& startTimeMillis, const double& endTimeMillis);
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27
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28 void drawTempoArrays();
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29
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30 void resetSize(int length);
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31 void resetArrays();
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32 void simpleExample();
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33 void setStartPlaying();
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34 void zeroArrays();
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35
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36 double screenWidth;
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37
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38 void copyPriorToPosterior();
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39 // DynamicBayesianArray bayesArray;
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40
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41 double lastEventTime;
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42 double likelihoodNoise;
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43 double speedLikelihoodNoise;
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44
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45 //DynamicVector tmpPrior;
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46 DynamicVector tmpPosteriorForStorage;
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47 DynamicVector prior;
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48 DynamicVector posterior;
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49 DynamicVector likelihood;
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50
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51 DynamicVector relativeSpeedPrior;
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52 DynamicVector relativeSpeedLikelihood;
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53 DynamicVector relativeSpeedPosterior;
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54 DynamicVector acceleration;
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55
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56 double tmpBestEstimate;
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57
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58 // void updateTmpBestEstimate(const double& timeDifference);
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59
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60 int updateCounter;
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61
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62 void setPositionDistributionScalar(double f);
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63
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64 void resetSpeedToOne();
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65 void addGaussianNoiseToSpeedPosterior(const double& std_dev);
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66 void addTriangularNoiseToSpeedPosterior(const double& std_dev);
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67
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68 double bestEstimate;
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69 void updateBestEstimate(const double& timeDifference);
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70 double lastBestEstimateUpdateTime;
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71 double speedEstimate, speedEstimateIndex;
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72 double getSpeedEstimateIndex();
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73
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74 double speedDecayWidth, speedDecayAmount;
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75 void decaySpeedDistribution(double timeDifference);
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76
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77 void resetSpeedSize(int length);
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78 void setRelativeSpeedScalar(double f);
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79 void setSpeedPrior(double f);
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80 void calculateNewPriorOffset(const double& timeDifference);
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81 void setNewDistributionOffsets(const double& newOffset);
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82
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83 void setLikelihoodToConstant();
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84 void updateTempoLikelihood(const double& speedRatio, const double& matchFactor);
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85 void updateTempoDistribution();
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86
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87 void calculateTempoUpdate();
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88
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89 void updateBayesianDistributions(const double& newEventTime);
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90 void crossUpdateArrays(DynamicVector& position, DynamicVector& speed, double timeDifference);
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91 void complexCrossUpdate(const double& timeDifferenceInPositionVectorUnits);
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92 void translateByMaximumSpeed(const double& timeDifferenceInPositionVectorUnits);
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93 double crossUpdateTimeThreshold;//time after which we do complex update of multiple speeds
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94
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95 double speedPriorValue;
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96 int priorWidth;
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97 bool* realTimeMode;
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98 bool usingIntegratedTempoEstimate;
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99 double relativeSpeedLikelihoodStdDev;
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100
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101 void projectDistribution(const double& newEventTime, const double& newAlignmentPosition, DynamicVector& projectedPrior);
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102 void complexCrossUpdateProjection(DynamicVector& projectedPrior, const double& timeDifferenceInPositionVectorUnits);
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103 void translatePosteriorByMaximumSpeed(DynamicVector& translatedPosterior, const double& timeDifferenceInPositionVectorUnits);
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104
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105 void printPostOffset();
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106 int startingWindowWidth, matchWindowWidth;
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107 bool updatingSpeedDistribution;//false for testing
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108
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109 void zeroDistributionAtPosition(DynamicVector& distribution, const double& position);
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110 };
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111 #endif
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